Intercontinental Exchange, Inc.

The full register, from 13F filings

The Register tab above is hand research: a dozen holders, each traced to the filing it came from. This asks the same question of the whole market for the quarter ended 31-mar-2026, where 1,694 managers reported a position. Broad where the research is deep, and shallow in the ways a 13F always is.

Built from 13F filings, which report US listed, long, US custodied positions only. A register from this source is a floor rather than a level: a holder's true position can be far larger, as BlackRock's ASML stake shows at 1.28m shares in a 13F against 26.3m in its 13G/A. Holdings held through derivatives, outside US custody, or below a manager's reporting obligation do not appear. Where a holder is marked as a family, its total sums several separate filing entities and describes something no single filing describes; the constituent entities and their share counts are listed so the total can be checked. That roll-up can legitimately exceed the family's own Schedule 13G, because a 13G is filed by one legal entity: Vanguard reports Alphabet through ten advisory entities, and The Vanguard Group Inc itself reported zero after its January 2026 disaggregation.

What a reader needs to know to read these numbers

• ICE has a single listed class of common stock (NYSE: ICE). Company-level shares_outstanding (561,394,487) is taken from the Q2 2026 10-Q cover page, 'As of July 27, 2026'; the 2026 proxy statement separately reports 566,430,761 shares outstanding as of its own 19 March 2026 record date. Institutional register rows (all dated 30 Jun 2026, from Q2 2026 13F-HR filings) use the 10-Q's 561,394,487 denominator; the two proxy-sourced insider rows use the proxy's own 566,430,761 denominator, per each source's own reporting date, matching the convention used in this project's cme-group.json reference file.
• ICE's richest and most traceable minority stake by far is its combined position in Blockratize, Inc. (Polymarket): Series D Preferred (9.6 million shares, $1.0 billion, closed Oct 2025), Series E Preferred (approximately 4.2 million shares, $600 million, closed Mar 2026), and a common-stock tender (approximately 0.4 million shares, $40 million, Apr 2026). The Series D/E preferred combine for a ~$2.0 billion carrying value and 22% (outstanding) / 14% (fully diluted) ownership as of 30 Jun 2026; the common stock tranche is separately accounted for under the equity method (folded into the same combined equity-method balance as OCC) because the combined stakes give ICE significant influence. Polymarket is private, so none of this appears in any 13F.
• Bakkt (NYSE: BKKT) is ICE's one publicly listed, directly traceable equity holding. ICE's economic interest fell from 54% (Dec 2024) to 31% (Dec 2025) to 18% (Jun 2026), driven entirely by Bakkt's own share and warrant issuances, not by any ICE sale, per ICE's own 10-Q language. The most recent FILED share count, 8,380,362 Class A shares, comes from Bakkt's own 2026 proxy (as of 31 Mar 2026, 27% of Class A then outstanding) and is carried forward to the 30 Jun 2026 valuation date in this file; see the Bakkt holding's method_note for the full cross-check reconciling this against ICE's 10-Q figures and Bakkt's subsequent 10-Q share count.
• OCC (The Options Clearing Corporation): ICE discloses a clean, individually stated 40% ownership percentage in both the FY2025 10-K and the Q2 2026 10-Q, but never an individual carrying value. ICE's 'equity method investments' balance is a combined figure covering OCC together with either Bakkt (FY2025: $414 million combined) or the Polymarket common stock tranche (Q2 2026: $499 million combined), so OCC's value_usd is null here by design, per the rule against attributing a combined balance to a single named investee.
• Searched but found no percentage-of-ownership disclosure for MERSCORP Holdings, Inc. (MERS): ICE's 10-K discusses MERS only as a revenue-generating database/product line with no stated minority ownership percentage, consistent with ICE having acquired the remaining outside stake in MERSCORP in 2023 and now wholly owning it (excluded here as a wholly owned operating subsidiary, not a minority holding). No hits at all for 'Euroclear' or 'Tel Aviv' in either the Q2 2026 10-Q or the FY2025 10-K; ICE does not appear to hold a stake in either as of these filings.
• Register reconciliation on Vanguard and BlackRock. ICE's 2026 proxy states BlackRock, Inc. held 39,066,788 shares (6.9%) per a Schedule 13G/A filed 17 Apr 2025, and The Vanguard Group, Inc. held 57,061,845 shares (10.1%) per a Schedule 13G/A filed 3 Dec 2025. The register instead uses each manager's Q2 2026 Form 13F-HR (30 Jun 2026 position date): BlackRock reports 50,727,686 shares (higher than its stale 13G, consistent with continued index-fund inflows since Apr 2025) and Vanguard's two successor entities sum to 49,476,618 shares (lower than its Dec 2025 13G, plausibly because the 13G aggregates additional Vanguard-affiliated entities beyond the two successors checked here, or reflects a position change since Dec 2025).
• Self-gate check: summing the ten non-aggregate, non-insider institutional register rows (BlackRock, Vanguard, State Street, Morgan Stanley, Geode, Wellington, Norges Bank, FMR, JPMorgan, Bank of America) gives 189,388,738 shares against 561,394,487 shares outstanding, or 33.74%, within the expected 25 to 45 percent range for this register.